This script is Copyright (C) 2014-2017 Tenable Network Security, Inc.
A telephony application running on the remote host is affected by a
denial of service vulnerability.
According to the version in its SIP banner, the version of Asterisk
running on the remote host is potentially affected by a denial of
service vulnerability in the PJSIP channel driver. This is due to a
flaw in the 'res_pjsip_pubsub' module. The issue is triggered when
handling a SIP SUBSCRIBE request with unexpected mixes of headers for
a given event package. By using a specially crafted request, a remote
attacker could exploit this to crash the application.
Note that Nessus has not tested for this issue but has instead relied
only on the application's self-reported version number.
See also :
Upgrade to Asterisk 12.5.1 or apply the appropriate patch listed in
the Asterisk advisory.
Risk factor :
Low / CVSS Base Score : 2.1
CVSS Temporal Score : 1.8
Public Exploit Available : false